Clevis



Patented Feb. 22, 1927.

UNETED miss JOHN A. JAMES, OF SAILES, LOUISIANA.

CLEVIS.

Application filed August 20. 1923. Serial No. 658,412.

This invention relates to improvements in clevises which are adapted tobe used in combination with the draft beams of plows.

The principal objects of the invention are to provide clevises of novelconstruction which are capable of being quickly adjusted at thebeginning of plowing operations for the purpose of gauging the depth ofthe .plowshares in the soil; to provide clevises to which such necessaryadjustments may be made in a simple and convenient manner without thenecessity of special tools; and, to provide clevises which will besimple and cheap to manufacture, and which may readily be installed uponplows already now in use.

Other objects and advantages will appear in the following detaileddescription taken in connection with the accompanying drawing, forming apart of this specification, and in which drawing? Figure 1 is afragmentary side elevation of a plow equipped with my improvedadjustable clevis. I

Figure 2 is an enlarged side elevation of the clevis attached to afragment of the plow beam, and showing in dotted lines the positionassumed by a novel coupling device when being removed from or adjustedto the clevis.

Figure 3 is a transverse section, on a slightly enlarged scale, taken onthe line 33 'of Figure 2. V j

Figure 4 is a transverse section, on a slightly enlarged scale, taken onthe line 4.l of Figure 2.

Figure 5 is a detail perspective view of a novel coupling device whichmay be used in combination with the improved clevis.

In the accompanying drawing, wherein for the purpose of illustration isshown but the preferred embodiment of this invention, and whereinsimilar reference characters designate corresponding parts throughoutthe several views the letter A indicates a plow of any approvedconstruction; B clevis plates; and C, a coupling device which may beused in combination with the clevis plates B.

The clevis plates B are adapted to be carried by the draft beam 10 ofthe plow A on the opposite sides of the forward end thereof, each platecomprising a main body portion ll and a head 12. These companion platesmay be pivotally or axially connected, as at 13, to the forward end ofthe draft foration 18 in theforward end of the draft beam 10, and'may besecured in such an adjusted position by a suitable locking device 19herein shown as consisting of a headed bolt 20, a washer 21, and a locknut 22 threaded on the one end of the bolt 20. It can readily be seenthat by removing the locking device 19 and swinging the companion platesB upon the pivotal connection 13 a vertical adjustment of the clevisplates B may be secured with respect to the longitu dinal axis of thedraft beam 10..

The heads 12 of each of the companion plates B are each provided with avertical elongated slot 23 and'a plurality of spaced recesses 24extending forwardly in angular relation from the slot 23, preferably indiagonal planes, each recess2t preferaby terminating in a substantiallycircular enargement 25.

Referring now to the novel coupling device C, which may be used incombination with the clevis plates B, the same preferably comprises astem 27, the forward end of which may be hooked as at 28 for the purposeof securing the lap-ring or other fastening device of a single treethereto. The opposite end of the stem 27 may be provided with atransversely extending cross piece 29 thereby providing arms 30 whichproject beyond the sides of the stem 27 These arms 30 may have the sidesthereof flattened, as at 31, and the opposite ends rounded, as at 32,thereby providing arm members which will be polvgonal in cross section.

When in use, the arms 30 of the coupling device C are adapted to bepositioned in the elongated vertical slots 23, and the coupling device Cmay be moved longitudinally of the slot 23, that is vertically withrespect to the beam 10 in order that various adjusted positions thereofmay be obtained. When it is desired to fit the coupling device C in anycircular el'ilargement E20 of the companion recesses 24 the same may becaused to enter the companion recesses 23 by holding in a positionsimilar to that shown in dotted lines in Figure 2 of the drawingso thatthe flattened sides 31 of the arms 30 will be parallel with the recesses2-1 and the hook C may then be drawn forwardly in the desired companionrecess 2% until it reaches the substantially circular enlargement whichis at the terminal of each recess 24;. The coupling device C may then beturned to a position similar to that shown in full lines in Figure 2 sothatthe rounded ends 32 of the arm will engage the "alls of the whichwill etli'cutively prevent the withdrawal or removal thereof until againturned to a position similar to that shown in dotted lines in Figure 2of the drawing.

From the foregoing description it can be seen that a novel clevis devicehas been provided which may itself be adjusted vertically with respectto the longitudinal axis of the beam and is provided with novel meanswhereby a coupling device which associated therewith may be selectivelyadjusted, with a minimum amount of time, and which adjustment may bewithout the use of special tools. It will also be apparent that due tothe simple construction of the devices they may be n'ianu'lactiu'ed andsold at a reasonable cost.

Changes in details may be made to the form of the invention herein shownand de scribed without departing from the spirit of the invention or thescope of the claim.

I claim:

is an article of manufacture a clevis including a pair of connectedspaced plates having transversely aligning substantially vertical slotstherein, each plate having a plurality of substantially parallelclownwardly sloping slots leading from the vertical slot and arranged atan acute angle thereto, each of said downwardly sloping slotshaving anenlarged socket at its lowermost end, the width of. said downwardlysloping: slots being' less than the width o'l the vertical slot, and thewidth of the enlarged socket of each of the downwardly sloping slotssubstantially corrcspoiuliiuy to the width ol? the vertical slot, and aT- shaped coupling); device including a shank portion adapted to bepositioned in the space between the plates and including cross arms atthe rear end oi said shank portion, which cross arms are of greaterwidth than thickness. the width of said arms being gi'catcr than thewidth of the downwardly sloping slots and the thickness of said armsbeing; less than the width of the downwardly slopiup' slots whereby thecoupling device will have to be tipped at a 'n'edeticrn'iined angle topermit the cross arms to slip from the vertical slotsthrough thedownwardly sloping slots into the socket ends oi the downwardly slopinp;slots, said cross arms when disposed in the enlarged socket ends olisaid downwardly sloping slots permitting pivoted movomcnt of thecoupling device in a vertical plane.

JOHN A. JAMES.

